A marketing research firm selects a random sample of adults and asks them a list of questions regarding their beverage preferences. What type of data collection is involved here?
An experiment.
A survey.
Direct observation.
None of these choices.
Which of the following statements is true regarding the design of a good survey?
The questions should be kept as short as possible.
A mixture of dichotomous, multiple-choice, and open-ended questions may be used.
Leading questions must be avoided.
All of these choices are true.
Which of the following must be avoided in designing a survey?
Dichotomous questions.
Leading questions.
Demographic questions.
Which method of data collection is involved when a researcher counts and records the number of students wearing backpacks on campus in a given day?
A researcher conducts a study where she divides subjects into two groups, gives each group a certain treatment, and records their responses. What type of data collection is being used here?
A census.
The personnel director at a large company studied the eating habits of the company's employees. The director watched and recorded whether each employee brought his/her own lunch to work, ate at the company cafeteria, or went out to lunch. What method of data collection was used here?
A personal interview.
Which of the following data collection methods is not observational?
A telephone interview.
A self-administered questionnaire.
"Wouldn't you agree that foreign cars are better than American cars?" is an example of a well-worded survey question.
Self-administered surveys usually have a high response rate.
In designing a survey, demographic questions must be avoided.
The response rate of a survey is the proportion of all people who were selected but did not complete the survey.
Experimental data tend to be more reliable, or "stronger," than survey data.
An experiment involves collecting data about persons or objects by deliberately exposing them to some kind of change and comparing the results.
An observational study involves collecting data about persons or objects by recording information about their selected characteristics of interest.
A question on a survey that was not answered is an example of an open-ended question.
A self-selected sample is the group of individuals who were randomly selected to be in the sample, then agreed to participate in the study.
A self-selected sample is one in which the individuals choose themselves to be in the sample.
In a(n) study, there is no attempt to control factors that might influence the variable of interest.
The rate is the proportion of people in the sample who completed the survey.
